We have the latest on sarai sierra. She's the new york mom found murdered in turkey. As authorities piece together her final hours to find the killer. Abc's nick schifrin spoke to her husband. Good morning, nick. Reporter: Good morning, george. Today, he's coping with unimaginable sadness, preparing to fly home with her body. Her murder still unsolved. This morning, investigators are combing through clues at the crime scene, trying to figure out how the new york mother's bodyas dumped inside a cave at the old city walls. The man who loved her for 16 years, told me on the phone, he was consumed by grief. How much do you miss her today? I can't put that in words. I've never, ever, in my life, have I had a love like this for another person. You know? It's a deep, deep love. Reporter: Steve sierra says he's heartbroken. He had always dreamed of spending the rest of his life with sarai. She's amazing. I mean, she is amazing. You know? She truly is. Just very loving. With the kids, she's so loving and caring. Reporter: Police are now taking dna samples from 21 suspects. And comparing them to dna found under sarai sierra's fingernails. They are combing through hundreds of hows of surveillance video. That's sierra in a mall, just one day before she was due home. Just a couple of hours before she left, she told her family she would come to this bridge to take a few final photos. It's only about a 15-minute walk from her use. She never made it. And she was never seen again. I would like to know what happened from the time she left her room, to the time she was going to take pictures of the bridge. Reporter: Sierra's coffin has been moved to a church to prepare for the journey home. In new york, her family is shocked and inconsolable. She was going to go on this trip. I hugged her before she left. Reporter: Steve sierra tells me he has to do one of the hardest things he'll ever have to do in his life, tell his kids. They still don't know if their mom is coming home. And he hasn't had the strength to tell them over the phone. Cannot blame him for that. We move on to some of the

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Sarai Sierra's Body Found: Missing New York Mom Found in Turkey

Nick Schifrin reports the latest on missing American mother who traveled alone to Turkey.

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